Anti-gas precautions for merchant shipping.
Great Britain.Ministry of Home Security.
London, H.M. Stationery Off.,
1941.
Page [3] of cover numbered as p. 43.
Previous editions issued by the Air raid precautions dept.
"List of air raid precautions handbooks": p. [2] of cover.
Cover title.
Gases, Asphyxiating and poisonous
Merchant marine